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Port 554 sometimes open

Checking with GRC Gibson research, sometimes I find Port 554 open: probing again only this port I find it Stealth.
What does it mean ? Is there a specific program using this Port ?
Thank You in advance

Re: Port 554 sometimes open

Originally Posted by radetzky

Checking with GRC Gibson research, sometimes I find Port 554 open: probing again only this port I find it Stealth.
What does it mean ? Is there a specific program using this Port ?
Thank You in advance

if you connect to the internet via a hardware firewall [Router] you could be testing the hardware f/w [Router] and not the PC's OS.port 554 has to do with real time streaming protocol, used to control media streaming, music, or video. so i'd suspect that there is an app you have installed that is related to streaming as either a server or client, or an apps installed for a Smartphone phone or Weather App may be responsible.
ZoneAlarm doesn't open or close ports, the app does. this wiki page gives a techie description and lists a number of client and server apps near the bottom. one of those, if installed, may be running as a service and keeping the ports open or showing closed.

many apps use upnp commands to open/close ports in hardware firewall transparently to the user.

the ultimate solution may be to uninstall any offending app or disable it when you are not actively using it.

It is Sometimes very Difficult toDiagnose and fix a Computerfrom halfway across the Country, or around the World,without All the Details about your computer it's Software and that you failed to provide, without our ability to sit in front of your Computer monitor and see what's going on..

The More information you post the more likely users here will be able to understand the issue and try to help.